EP0849970A2 - Procédé de transmission de paquets selon le protocole Internet en utilisant un transport de cellules ATM et réseau pour la mise en oeuvre de ce procédé - Google Patents
Procédé de transmission de paquets selon le protocole Internet en utilisant un transport de cellules ATM et réseau pour la mise en oeuvre de ce procédé Download PDFInfo
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- EP0849970A2 EP0849970A2 EP97122565A EP97122565A EP0849970A2 EP 0849970 A2 EP0849970 A2 EP 0849970A2 EP 97122565 A EP97122565 A EP 97122565A EP 97122565 A EP97122565 A EP 97122565A EP 0849970 A2 EP0849970 A2 EP 0849970A2
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- Prior art keywords
- packet
- atm
- router
- network
- path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
- H04L12/4608—LAN interconnection over ATM networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5619—Network Node Interface, e.g. tandem connections, transit switching
- H04L2012/562—Routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5638—Services, e.g. multimedia, GOS, QOS
- H04L2012/5665—Interaction of ATM with other protocols
- H04L2012/5667—IP over ATM
Definitions
- This invention relates to computer communication and networking and in particular to a method of transmitting, on an asynchronous transfer mode (ATM) network, a packet which is formed in accordance with a protocol different from that of the ATM and to a network system for transmitting the packet.
- ATM asynchronous transfer mode
- IP Internet Protocol
- TCP Transmission Control Protocol
- ATM asynchronous transfer mode
- all information to be transferred is arranged within a slot which has a fixed length and which is called a cell.
- each cell is composed of an information field of 48 octet lengths and a header field of 5 octet lengths.
- the ATM protocol has two hiearchical layers, namely, 1) a virtual channel level and 2) a virtual path level.
- the virtual channel is to describe a unidirectional transfer channel of an ATM cell which is specified by a common unique value of an identifier.
- the identifier is called a virtual channel identifier and is located within a part of the header field.
- the virtual path is to describe a unidirectional transfer path to which each virtual channel belongs and is specified by a virtual path identifier (VPI) which is also located within the header field.
- VPN virtual path identifier
- all of ATM cells that have the same virtual channel connection and virtual path connection (VCC/VPC) are transferred through the same route in the network.
- the order of the ATM cells is kept in all of the VCC. This shows that one of the ATM cells transmitted as the first transmission cell is received as a first reception cell.
- IP network is practically implemented by routers each of which is operable in response to a packet to determine an output port to which the packet is delivered.
- routers each of which is operable in response to a packet to determine an output port to which the packet is delivered.
- a great deal of processing is required in each router. This becomes a bottleneck for realizing a high speed operation in the IP network.
- Japanese Patent Unexamined Publication No. Hei 8-125692 namely, 125692/1996 (will be called Reference 1) discloses a technique which uses a cell switch router (abbreviated to CSR).
- the CSR carries out no usual IP table look-up to detect an output port and, instead, observes a certain attribute of each IP packet to select an output port related to the attribute and to extract a VCI previously determined for the output port. Thereafter, the CSR converts the packet into a sequence of ATM cells which is headed by the determined VCI and which is transferred.
- the CSR can transfer the packet in a manner similar to the ATM switch.
- a cut-through or a short-cut operation conversion and transfer operation by converting a network address of an IP packet (or a packet formed in accordance with a protocol of a different layer) into a simple virtual channel
- processing for mapping an attribute of the network layer or an upper layer onto a VCI may be referred to as binding hereinafter.
- a mode and a path of the cut-through operation will be named a cut-through mode and a cut-through path which may be also called a switched mode and a switched path, respectively.
- the binding should be previously determined in connection with each attribute.
- ATM connection setup needs to be carried out by either a PVC (Permanent Virtual Channel) or an SVC (Switched Virtual Channel).
- PVC Permanent Virtual Channel
- SVC Switchched Virtual Channel
- IPOA IP over ATM
- MPOA Multi-Protocol over ATM
- the conventional techniques mentioned above are disadvantageous in that the PVC basis system should prepare a great number of the VCs in dependency upon a network size and a species of attributes to be selected and, therefore, lacks scalability.
- the SVC basis system has a shortcoming that an overhead inevitably occurs on establishment of connection and brings about degradation of a merit resulting from the cut-through operation when a short session is transferred through the ATM network.
- WO97/28505 discloses a method where in each node in a network is structured by an ATM switch and an IP routing module connected to the ATM switch and has a function of identifying a packet flow.
- each flow is usually defined by a combination of a transmission source address of an IP packet, a destination address, a port number on the TCP protocol and is used to define a sequence of packets which form a session.
- a flow identifier has been already defined in a new version, IP v 6, of the IP protocol.
- a certain flow is at first transmitted by the use of a default VC which stands for a PVC previously defined to send the flow to the router module of the node.
- a default VC which stands for a PVC previously defined to send the flow to the router module of the node.
- Such an operation itself which sends the flow to the routing module is completely identical with the operation carried out in the IP network except that the packet is transferred in the form of ATM cells.
- Each node monitors continuation of the flow and simultaneously carries out signaling between two adjacent ones of the nodes, namely, an upstream node and a downstream node in accordance with a local protocol which is called a flow management protocol and which is not standardized.
- an indication which shows assignment of a VCI to the flow is issued from the downstream node to the upstream node at a certain time instant so that a VCI is to be assigned to the flow. Responsive to this indication, the node switches the flow from the default VC to a VC indicated by the downstream node.
- each node is operated as a usual router in response to a flow which is finished within a short time and is operated by the use of an SVC in the cut-through mode in response to a flow which is continued for a comparatively long time.
- This method can avoid a reduction of efficiency which might occur in the conventional methods mentioned above.
- an inherent signaling protocol is run for a certain time between the nodes to establish a virtual connection while each node is operated as the router.
- the multicast is for simultaneously delivering a packet to a plurality of reception terminals.
- IP multicast protocol which is known as a dense mode PIM (Protocol Independent Multicast), a DVMRP (Distance Vector Multicast Routing Protocol), and the like.
- each transmission node transfers a multicast packet without recognizing reception nodes. Specifically, a connection for the multicast is established in the existing IP protocol after a reception node receives a first one of packets and returns a packet which is representative of whether or not the multicast is received by the reception node itself.
- the transmission node never acknowledges each reception node when the connection for the multicast is established.
- a network connection is completed when a connection request is issued from a transmission side and a reception side responds to the connection request and informs that the reception side can be connected.
- the network connection is completed when the transmission side acknowledges the reception side.
- a serious problem of a conventional cut-through technique is that a router mode can not be resumed once the cut-through mode is shifted from the router mode.
- the ATM technique is essentially introduced as novel means for operating the IP network at a high speed.
- it is not preferable that such novel means is operated in a manner different from the IP network.
- each conventional cut-through technique can not cope with a dynamic change which often takes place in the IP network.
- each node which is arranged in a network is structured by an IP routing module and an ATM switch and has a function of identifying a packet flow, like in Reference 2.
- this invention is completely different from Reference 2 in that a VC is set up by a first or an initial packet of a flow and a control packet, which is defined by an IP protocol and an upper protocol, and is sent to the routing module.
- a network system is operable in response to a packet flow which defines a single session and which is formed on the basis of a predetermined protocol, to transmit the packet flow through an ATM network to a destination.
- the ATM network converts the packet flow into a sequence of ATM cells and comprises a source for transmitting the sequence of the ATM cells by the use of an unused VCI (Virtual Channel Identifier) and a node each of which has a plurality of input ports and a plurality of output ports.
- Each of the nodes comprises a router for determining one of the output ports from information included in the ATM cells that carry a first packet of the packet flow and a mechanism to associate the determined one of the output ports with the unused VCI thus setting a switched path.
- the node further comprises an ATM switch for transporting the remaining ATM cells except the selected one of the ATM cells through the determined one of the output ports without control of the router when each of the remaining ATM cells has a VCI identical with the unused VCI.
- a method is for use in transmitting a connectionless packet between a source and a destination over an ATM network comprising at least one node that includes a packet router and an ATM switch connected to the packet router.
- the packet router has a lookup table while the ATM switch has a plurality of input ports , a plurality of output ports, and a routing table for identifying a plurality of VCIs.
- the method comprises the steps of:
- description will be at first directed to our inventive concept and method for forwarding/routing IP packets.
- description is directed to establishment of a connection which is performed in this invention by the use of an ATM network.
- a connection is set up on an end-to-end basis and is divided into a plurality of links.
- each link within the connection uses a VCI peculiar to each link and each node carries out conversion between an input VCI and an output VCI. This shows that each node owns a VC space used on a downstream link.
- the ATM network has a plurality of nodes each of which comprises an ATM switch, such as 520 and 530, and an IP route, such as 525 and 535, logically coupled to the ATM switches 520 and 530.
- the source node 500 carries out VC mapping for a link 505 which is directed from the source node 500 towards the ATM switch 520 while the ATM switch 520 carries out VC mapping for a link 524 which is directed from the ATM switch 520 towards the ATM switch 530.
- each of the ATM switches 520 and 530 has ports which are connected to the individual IP routers 525the ATM switches 520 and 530 have ports which are connected to the individual IP routers 525 and 535.
- each of the ATM switches 520 and 530 is assumed to have a VC space which is recognizable between the ATM switches 520 and 530 and which is initially determined.
- each of the ATM switches has a VC routing table.
- all of unused VCs indicate switch ports which are directed to the IP router, such as 525, 535, as a destination port, when the ATM switch is initially set up, as illustrated in Fig. 1A.
- the unused VCs mean VCs which are undefined on an ATM connection and which are freely used.
- Figs. 1B and 1C relationships between the input VCs and the output ports and between the output VCs and the output ports are stored in the ATM switch 520 and the IP router 525. Since the input VCs 3, 4, 6, and 7 are unused VCs in the example illustrated in Fig. 1B, the IP router 525 is connected to the ATM switch 520 when each of the unused VCs 3, 4, 6, and 7 is given to the ATM switch 520.
- the source node 500 select the unused VC 4 for a flow A and supply the unused VC to the ATM switch 520 in the form of a sequence of ATM cells.
- a first group of the ATM cells that holds the unused VC containing a first packet of the flow A is delivered to the IP router 525 in accordance with the table illustrated in Fig. 1B.
- the IP router 525 carries out routing processing to judge that the flow A in question is to be delivered to the output port 2.
- the output port number in the table is rewritten into the output port 2 which corresponds to the unused VC 4, as shown in Fig. 1C.
- the flow A is transported or transferred to a downstream side by the use of an output VC5.
- the source node 500 receives an IP packet of a connectionless type and selects one of the VCs as an available VC from a pool.
- the ATM switch 520 has the VC routing table which is kept in an ATM line interface card and which is given the available VC determined for the flow.
- the VC routing table in the ATM switch 520 detects that the available VC given from the source node 500 is unknown in the ATM switch 520 and is detected as an unused VC.
- the source node 500 may be an ATM switch which actually generates the flow or which may be an edge device or switch which the flow subjected to routing encounters at first.
- the ATM switch 520 Supplied with the unused VC through an input port of the ATM switch 520, the ATM switch 520 directs or guides the connectionless IP packet to the IP router 525 in the form of the ATM cells. In other words, the connectionless packet is routed to the IP router in response to the unused VC. Therefore, this mode will be referred to as a routed mode.
- the IP router 525 While the IP router 525 carries out processing to determine an output port of the ATM switch 520 for the connectionless IP packet, the ATM cell sequence related to the connectionless IP packet is successively stored in a buffer (Buf) and which is previously determined for the unused VC in question. Thus, a next hop is determined by the IP router 525. This shows that an output port is decided on the basis of the first packet in ATM cell forms with unused VC. In the illustrated example, the output port which is connected to the link 524 is decided by the IP router 525. In this event, a new unused VC is selected for the link 524.
- Buf buffer
- the ATM cells stored or buffered in the buffer (not shown) are redirected along with the new VC to the output port connected to the link 524.
- the ATM switch 520 When the new VC is an unused VC in the ATM switch 520, the ATM switch 520 at first selects the unused VC for the link 524 and rewrites the unused VC into a used VC in the VC routing table included in the input line interface card. Under the circumstances, the ATM switch 520 transfers the connectionless IP packet in the form of the ATM cell along with the unused VC towards a downstream node, namely, the ATM switch 530 and the IP router 535 which forms a next hop.
- the unused VC is arranged within a header field of the ATM cell.
- the ATM switch 520 After translation of the unused VC, the ATM switch 520 establishes a switched virtual channel (SVC) between the input port and the output port therein under control of the IP router 525 and is put into a cut-through mode, namely, a switched mode. Thereafter, the following ATM cells are transported towards the downstream node through the switched virtual channel (SVC).
- SVC switched virtual channel
- each of the flows namely, IP flows is at first processed in the routed mode and is switched to the cut-through mode after a first one of the IP packets is processed.
- the method according to this invention can set up a VC between the source and the destination without any signaling between nodes or ends, namely, transmission/reception between them.
- the above-mentioned method can not process any following control message by the IP router once the flow is switched to the cut-through path. This makes it difficult to return back to the routed mode after the cut-through mode is set up.
- the cut-through mode consideration may be made about a method of utilizing a predetermined default PVC or another novel unused VC to directly transfer, to an IP router, a message (for example, a control message) which is to be processed by the IP router and which is concerned with the flow. This means that the message is not passed through the cut-through path in the cut-through mode.
- a message for example, a control message
- proposal will be made in this invention about a method of transmitting an operation administration management (OAM) cell by using an identical VC.
- This method is effective to transfer the control message in the cut-through mode, as will become clear later.
- two kinds of the OAM cells are preferably used when the control message or packet is sent during transmission of the flow. Specifically, it is preferable that a first one of the OAM cells is for allowing all of the following data cells to pass through the routed path while a second one of the OAM cells is for allowing all of the following data cells to pass through the cut-through path or for returning the same back to the cut-through path.
- description will be made later about necessity and a merit of sending such a control message at the beginning of, during, and at the end of the flow.
- the cut-through path namely, a cut-through ATM connection is established in the same direction that the flow is transmitted and that may be referred to as a forward direction.
- the cut-through connection is set up at every one of the ATM switches on a hop-by-hop basis in the forward direction.
- PRESERVE is the abbreviation of "Peek and Reserve” standing for carrying out observation in the forward direction and reserving a connection in the reverse direction.
- a source (SRC) 700 issues a transmission request to a destination server (DEST) 710 to make the destination server 710 return information back to the source (SRC).
- DEST destination server
- the request 715 is at first allowed to pass through a network from the source (SRC) 700 to the destination server (DEST) 710 via a routed path. Thereafter, a switched path 701 is established in the reverse direction by the method according to this invention which may be called IPSOFACTO, as shown in Fig. 4. In the illustrated example, the request 715 is issued from SRC 700 with an unused VC "64" indicated.
- the ATM switches 720 and 730 which are operable as transfer switches forward the request in the forward direction by the use of VCs which correspond to the above-mentioned unused VC.
- the destination server (DEST) 710 is operated to transmit a data stream in the reverse direction by the use of the VC which is identical with that attached to the request.
- bi-directional cut-through paths 705 and 717 are established between the SRC 700 and the DEST 710, as shown in Fig. 4, before a data stream 714 is sent from the SRC 700.
- the SRC 700 sends the data stream 714 on the identical VC "64". According to this procedure, it is possible to suppress data buffering in a switch controller to a minimum when decision is made about IP routing.
- a flow is processed in accordance with the above-mentioned procedure prescribed by the PRESERVE protocol in the illustrated manner and is assumed to be given in the form of a call.
- the SRC 700 indicates establishment or set-up of a connection between the SRC 700 and the DEST 710.
- Such a set-up operation is started by allowing a RESERVE message to pass through a network which is connected between the SRC 700 and the DEST 710.
- three of the ATM switches are interposed between the SRC 700 and the DEST 710 and may be referred to as first, second, and third ATM switches from a nearest one of the ATM switches in the order.
- the RESERVE message is received at each ATM switch at a different time instant and is transferred downwards in the forward direction.
- each ATM switch sets up a cut-through path or a switched path in the reverse direction opposite to the forward direction to which the RESERVE message is transferred.
- the cut-through path is bi-directional and may be called a bi-directional cut-through path.
- the cut-through path is established between the SRC 700 and the first ATM switches at a time instant t1.
- the cut-through path is formed between the SRC 700 and the second ATM switch at a time instant t2 via the first ATM switch. Similar operation is carried out by all of the ATM switches interposed in the connection, until the bi-directional cut-through path is completely set up at a time instant t4.
- the bi-directional cut-through path can be set up or established on the hop-by-hop basis, simultaneously with passage of the RESERVE message which may serve as a signaling message.
- Such information concerned with the application can be transmitted by the use of an OAM cell.
- the transmission of the OAM cell may be considered as a kind of control message transmission.
- Fig. 6 similar operation can be also carried out in a network which includes the SRC, the DEST, and two ATM switches between the SRC and the DEST and which is also similar in structure to a network which will be illustrated later in conjunction with Fig. 8.
- the SRC is given a request (Req) and selects an unused VC (specified by "37" in this figure) to supply an ATM switch with an ATM cell which includes the unused VC arranged before the request.
- the ATM switch sends the request (Req) to an IP router when the unused VC is included in the request (Req).
- the ATM switch selects an output port with reference to the request (Req) and selects an unused VC (specified by "53" in this example) to send the request (Req) along with the unused VC "53" downwards.
- a cut-through path is formed by the use of a VC "64" between the ATM switch and the SRC.
- a routed path is formed between two adjacent ones of the IP routers due to passage of the request (Req) while a cut-through path is set up. Under the circumstances, a data stream which follows the request (Req) is bi-directionally transmitted through the cut-through path between the SRC and the DEST.
- IP traffic used in the IP protocol will be classified into a plurality of classes and description will be made about a control operation in each class, which is carried out in accordance with this invention.
- IP traffic of a pure data stream with no signaling 1.
- UDP User Datagram Protocol
- IGMP Internet Group Management Protocol
- a message may be transmitted on an unused VC but the unused VC may be immediately returned back to an unused VC space without identification after it is used.
- Such a message according to the IGMP is delivered only to an adjacent one of hops.
- UDP-based NFS Network File System
- a UDP request is sent in a forward direction while a requested datagram is sent in a reverse direction.
- the PRESERVE protocol may be used to set up a cut-through path in the reverse direction while a routing operation is executed as regards the forward direction.
- TCP transmission control protocol
- the TCP is connection oriented and has packets which are defined to explicitly carry out set-up/release of a connection and which may include a SYN packet and a FIN packet for set-up/release, SYNACK and FINACK packets defined for acknowledgement of the SYN and the FIN packets.
- the method according to this invention can be realized by the use of the explicit signaling. More specifically, all the signaling packets exemplified above are passed through a routed path while the following data packets are passed through a cut-through path once a virtual channel is set up.
- the SYN packet is used to set up the cut-through path while the FIN packet is used to tear down the cut-through path.
- a TCP connection can be set up or torn down in a forward direction by the use of the SYN/FIN packet sent from a sender or a source while the TCP connection can also be set up or torn down in a reverse direction by the use of the SYNACK/FINACK packets.
- This class includes IP-multicast, resource reservation protocol (RSVP), mobile IP, and the like.
- RSVP resource reservation protocol
- all of signaling/refreshing packets that belong to this class are transferred through a routed path while the following data packets are transferred through a cut-through path. It is noted that a virtual channel is set up by the signaling packet.
- a routed path is selected as an initial path by the IP packet.
- a method of forming such a routed path there are first, second, and third methods which use an unused VC, a default VC, and an ATM OAM cell, respectively.
- each IP packet is checked by an IP router and is classified in the manner mentioned above. After classification, each data packet is switched to the cut-through path.
- Traffic is monitored at the IP level in this invention. Specifically, the cut-through path is eliminated from a table, as shown in Fig. 1(A), when a specific protocol message, such as PRUNE, FIN, is sent on the routed path.
- a specific protocol message such as PRUNE, FIN
- a connection is set up or conversely torn down by the TCP handshake protocol (SYN, SYNACK, FIN, FINACK).
- the method according to this invention which may be named IPSOFACTO can shorten a set-up time for the TCP traffic in comparison with the conventional techniques. Additionally, the method according to this invention allows situations to exist where a TCP session is torn down in one direction but continues in the other direction. Such situations may be called TCP half-close. This means that the method of this invention can be naturally fitted with general applications such as rsh and web browsers, such as Netscape.
- IPSOFACTO IP-multicast
- IPSOFACTO IP-multicast protocol
- the Internet Engineering Task Force (IETF) has recently combined CBT and DVMRP into PIM (Protocol Independent Multicast).
- PIM Protocol Independent Multicast
- the DVMRP is used for a dense mode while the CBT is used for a sparse mode.
- the IGMP Internet Group Management Protocol
- DR designated router
- the IGMP learns about group members that are directly attached to the designated router (DR).
- a query is sent to a specific group, namely, a whole host multicast group (may be, for example, (224.0.0.4)) in the form of a multicast to determine whether or not receivers for the specific multicast address group are present.
- a query is repeated at a short period of, for example, 5 seconds.
- Each receiver for a group (225.0.0.1) sets a local timer and the receiver whose timer is reset sends a response on 225.0.0.1 with a time to live (TTL) kept at 1.
- TTL time to live
- This response is received by all members of the group and also by the IP router (which monitors all multicast addresses). In the router, information related to the group member is refreshed and kept therein. If no response is received on a certain group after a certain number of cycles, the router removes the group state. Additionally, each receiver sends a join request as soon as it desires to join a group without waiting for the next query.
- the IGMP is mapped in the following manner.
- the ATM broadcast and the multicast as mentioned above can be executed by the use of a function which is prepared as hardware function in the ATM switch.
- the mapping on the VC table will depend on the specific switch implementation. In the case where a specific ATM switch has a cell forwarding mechanism which can execute address filtering on an output side, an address is converted into a new bit map address which is afresh generated for cells of the group.
- the illustrated network comprises an ATM network 810 and a plurality of ATM switches (not shown) in the ATM network.
- the ATM network is connected to a source (SRC) 800 and a plurality of receivers (RCV) 820, 830, and 840.
- SRC source
- RCV receivers
- the multicast operation will be described among the SRC 800 and the RCVs 820, 830, and 840.
- each ATM switch can access the corresponding IP router in a manner, as mentioned before.
- a control message such as PRUNE, GRAFT, and JOIN, which is defined by the IP protocol and which is concerned with a connection, is transmitted on a routed path while a data stream transmitted among the SRC 800 and each RCVs 820 to 840 is transmitted on a cut-through path.
- This method is advantageous in that the function of the IP multicast can be simply and directly mapped onto the underlying ATM switch hardware. In this event, scalability and a dynamic flow characteristic are kept intact which are prepared for the IP multicast protocol.
- a node receives a multicast packet in the form of a sequence of ATM cells (Step 900) and judges whether or not a VC is already present for transmitting the cell (Step 902) in the node.
- the cell is transferred in a cut-through mode.
- a packet is assembled in the node, as shown at Step 906 and is transferred to a next node (Step 908) after a one-to-many broadcast bitmap is formed in the node.
- Step 911 Supplied with the PRUNE message (Step 911) from a multicast group (910), the node clears, from the bitmap, a bit concerned with this group (Step 912), because the PRUNE message represents absence of a receiver.
- RSVP Resource Reservation Protocol
- description will be directed to the RSVP.
- the RSVP is a protocol especially designed for an integrated services internet.
- the RSVP enables applications to set up reservations over a network so as to respond to various kinds of requests.
- each receiver selects a resource for the reservation and starts and keeps the reservation in an active state as long as possible.
- the RSVP is an internet control protocol which is used by applications to guarantee predetermined quality of service on a network and is never a routing protocol. Therefore, the RSVP plays a role to set up and to maintain the resource reservation on a distribution tree.
- a typical flow in the RSVP begins with a PATH message which is sent from a source or sender to a destination or receiver prior to transmission of a data packet stream.
- the sender includes information related to the destination (flow spec), a traffic class, and a necessary resource (Tspec).
- the PATH message typically includes an Adspec field which indicates the state of congestion in each node located in a forward path, namely, an average delay over a set of time constraints.
- the node compares the delay expected on that path (Adspec) with the delay requested by the application (Tspec) and then transmits a RESV message on the reverse path.
- Adspec delay expected on that path
- Tspec delay requested by the application
- Each switch in the reverse path locks in the request based upon its state.
- the RSVP is a softstate protocol which is reset after lapse of a predetermined time interval and the flow should be kept by periodically producing the PATH message.
- bandwidth requests may be varied at every one of the PATH messages on the needs of the application. This way works particularly well for non-stationary sources, such as video.
- the RSVP flows are conveniently mapped to ATM Quality of Service (QoS) based classes.
- QoS Quality of Service
- the ATM technique is one of the few technologies that allows the RSVP to request resources and then fulfill those requests.
- the existing ATM signaling does not support bandwidth renegotiation. Consequently, the mapping from the RSVP to the ATM is not efficient because each PATH message brings about a new VC set-up which needs new signaling.
- the RSVP is mapped onto the ATM in accordance with this invention.
- the RSVP flow begins with the PATH message sent from a sender and may be said to be a message concerned with a connection.
- an upstream router selects an unused VC for this flow and transmits the unused VC in the form of an OAM cell.
- the message is processed by an RSVP/routing module placed on an IP router port. Subsequently, the following IP packets are transported on a virtual channel for particular service classes (CBR, VBR, ABR, or UBR).
- CBR service classes
- the above-mentioned method according to this invention is advantageous in that dynamic renegotiation can be carried out for the RSVP flow without tearing down the connection or allocating a new VC.
- the sender supplies an upstream node with the PATH message prior to the following data packet.
- the PATH message is sent as a message which has a function of a source reservation request.
- an ATM switch identifies the PATH message and sends the same to the RSVP/routing module which is operable as an IP router and which is connected to an IP router port.
- the IP router selects an unused VC and transmits the unused VC on a virtual channel in the form of an OAM cell.
- the OAM cell is transmitted to a downstream ATM switch which forms a downstream node.
- the OAM cell is sent to an IP router of the downstream node through the downstream ATM switch and the IP router selects a virtual channel on the basis of a specification requested by the PATH message.
- one-to-many multicast VCs is set by the IP router.
- the following IP packets are transmitted on cut-through paths specified by the multicast VCs.
- the method according to this invention uses a dual IP/ATM protocol stack, it is possible to execute VP-level aggregation of the flows at the core of the network by using either PVCs or SVCs on the native ATM protocol stack and to carry out the switching at every flow by the use of the method, namely, IPSOFACTO, according to this invention at the edge of the core network.
- IPSOFACTO IPSOFACTO
- a plurality of flows which pass through a cut-through path are mapped onto a route-based VC which is set up by the use of the native ATM stack.
- Switches located in the core of the network may only carry out switching on the basis of the VP and may not carry out switching on the per-flow basis.
- the job of aggregating a plurality of flows into a VP is made at the edge switch which is operated in accordance with the method of this invention.
- Setting up an SVC (or PVC) through the core formed by the ATM switches needs information from the IP routing module.
- IP source routing at the edge of the core network and to set a SVC up for a given route.
- Such SVCs are torn down only when all flows on the given route are extinct.
- a network system carries out the aggregation of the flows in the above-mentioned manner.
- the illustrated network system includes a core ATM network 1401 and a plurality of ATM switches 1402, 1403, 1404, and 1405 which are arranged at a periphery of the core ATM network 1401 and which serve as edge switches mentioned above.
- the ATM 1405 is connected to an ATM switch 1406 on the hop-by-hop basis.
- an SVC VP/VC
- the edge switch transfers the following flows destined to the output ATM switch, on the same VP by the use of different VCs.
- the VP/VC are torn down upon reception of a final packet of a last one of the flows.
- IP protocol has been exemplified in the above-description, it is readily understood that the method according to this method is not restricted to the IP protocol but all of the other protocols (for example, IPX (Internet Packet Exchange) or the like) that can be handled by a routing table connected to each ATM switch. This is because the method according to this invention is non-protocol oriented.
- IPX Internet Packet Exchange
- each ATM switch can be used as a switch of the ATM network on packet transfer but to use it as hardware for fast packet transport or transfer. Consequently, each switch node can execute fast packet transfer in accordance with the IP protocols without ATM signaling or without using a particular protocol locally determined between nodes, independently of the other nodes.
- each ATM switch can be also used as a native element of the ATM network on transferring an ATM cell. This is because the ATM switch is operable on the basis of the dual IP/ATM protocol stack. At any rate, it is said that the method according to this invention is very flexible and can also cope with various kinds of the protocols other than the ATM protocol.
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0982899A2 (fr) * | 1998-08-28 | 2000-03-01 | Fujitsu Limited | Interface pour effectuer un contrôle de connection à la transition entre deux réseaux de communications |
WO2000062483A1 (fr) * | 1999-04-13 | 2000-10-19 | Nortel Networks, Inc. | Systeme permettant de suivre des donnees au sein d'un reseau a base de canaux |
WO2001065782A1 (fr) * | 2000-02-28 | 2001-09-07 | Telia Ab | Procede d'etablissement de trajets de transmission de donnees de bout en bout, au moyen du protocole de signalisation de reservation de ressources point par point, base protocole icmp |
WO2001086863A1 (fr) * | 2000-05-05 | 2001-11-15 | Fujitsu Network Communications, Inc. | Reseau et procede de transport |
US6515966B1 (en) | 2000-05-05 | 2003-02-04 | Fujitsu Network Communications, Inc. | System and method for application object transport |
US6693909B1 (en) | 2000-05-05 | 2004-02-17 | Fujitsu Network Communications, Inc. | Method and system for transporting traffic in a packet-switched network |
US6775229B1 (en) | 2000-05-05 | 2004-08-10 | Fujitsu Network Communications, Inc. | Method and system for providing a protection path for connection-oriented signals in a telecommunications network |
US7047176B2 (en) | 2000-05-05 | 2006-05-16 | Fujitsu Limited | Method and system for hardware simulation |
US7058730B2 (en) | 2000-05-05 | 2006-06-06 | Fujitsu Limited | Unique address space and method for a transport network |
US7075927B2 (en) | 2000-05-05 | 2006-07-11 | Fujitsu Limited | Method and system for quality of service (QoS) support in a packet-switched network |
US7151773B1 (en) | 2000-05-05 | 2006-12-19 | Fujitsu Limited | System and method for connectionless/connection oriented signal transport |
US7173912B2 (en) | 2000-05-05 | 2007-02-06 | Fujitsu Limited | Method and system for modeling and advertising asymmetric topology of a node in a transport network |
US7385917B1 (en) | 2000-05-05 | 2008-06-10 | Fujitsu Limited | Method and system for providing a protection path for connectionless signals in a telecommunications network |
Families Citing this family (305)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020004812A1 (en) * | 1997-06-26 | 2002-01-10 | Tetsuro Motoyama | Method and system for diagnosis and control of machines using connectionless modes having delivery monitoring and an alternate communication mode |
US6847611B1 (en) | 1990-12-10 | 2005-01-25 | At&T Corp. | Traffic management for frame relay switched data service |
US6460036B1 (en) * | 1994-11-29 | 2002-10-01 | Pinpoint Incorporated | System and method for providing customized electronic newspapers and target advertisements |
US5758257A (en) | 1994-11-29 | 1998-05-26 | Herz; Frederick | System and method for scheduling broadcast of and access to video programs and other data using customer profiles |
US6041166A (en) * | 1995-07-14 | 2000-03-21 | 3Com Corp. | Virtual network architecture for connectionless LAN backbone |
US6147996A (en) * | 1995-08-04 | 2000-11-14 | Cisco Technology, Inc. | Pipelined multiple issue packet switch |
GB9603582D0 (en) | 1996-02-20 | 1996-04-17 | Hewlett Packard Co | Method of accessing service resource items that are for use in a telecommunications system |
US6091725A (en) * | 1995-12-29 | 2000-07-18 | Cisco Systems, Inc. | Method for traffic management, traffic prioritization, access control, and packet forwarding in a datagram computer network |
US6035105A (en) | 1996-01-02 | 2000-03-07 | Cisco Technology, Inc. | Multiple VLAN architecture system |
US6178169B1 (en) * | 1996-03-28 | 2001-01-23 | British Telecommunications Public Limited Company | Method of transmitting an ATM cell over an ATM network |
US6243667B1 (en) | 1996-05-28 | 2001-06-05 | Cisco Systems, Inc. | Network flow switching and flow data export |
US6308148B1 (en) * | 1996-05-28 | 2001-10-23 | Cisco Technology, Inc. | Network flow data export |
GB9613020D0 (en) * | 1996-06-21 | 1996-08-28 | British Telecomm | Atm partial cut-through |
US6212182B1 (en) | 1996-06-27 | 2001-04-03 | Cisco Technology, Inc. | Combined unicast and multicast scheduling |
US6434120B1 (en) | 1998-08-25 | 2002-08-13 | Cisco Technology, Inc. | Autosensing LMI protocols in frame relay networks |
JPH1079740A (ja) * | 1996-09-03 | 1998-03-24 | Hitachi Ltd | Atmスイッチを用いたルータ装置 |
US6751221B1 (en) * | 1996-10-04 | 2004-06-15 | Kabushiki Kaisha Toshiba | Data transmitting node and network inter-connection node suitable for home network environment |
US5903559A (en) * | 1996-12-20 | 1999-05-11 | Nec Usa, Inc. | Method for internet protocol switching over fast ATM cell transport |
US6115373A (en) * | 1997-01-24 | 2000-09-05 | The Hong Kong University Of Science And Technology | Information network architecture |
JP3591753B2 (ja) * | 1997-01-30 | 2004-11-24 | 富士通株式会社 | ファイアウォール方式およびその方法 |
US6084910A (en) * | 1997-01-31 | 2000-07-04 | Hughes Electronics Corporation | Statistical multiplexer for video signals |
DE69735084T2 (de) * | 1997-02-18 | 2006-08-31 | Matsushita Electric Industrial Co., Ltd., Kadoma | Leitwegumlenkungsverfahren in hierarchischen strukturierten Netzwerken |
DE19707061C2 (de) * | 1997-02-21 | 1999-07-15 | Siemens Ag | ATM-Kommunikationssystem zum Vermitteln von Internet-Datenpaketen |
US6009097A (en) * | 1997-04-04 | 1999-12-28 | Lucent Technologies Inc. | System for routing packet switched traffic |
EP0974218A4 (fr) * | 1997-04-09 | 2005-04-13 | Alcatel Australia | Groupe ferme d'utilisateurs internet |
CA2202572C (fr) * | 1997-04-14 | 2004-02-10 | Ka Lun Eddie Law | Serveur web a variabilite dimensionnelle et methode de gestion efficace de serveurs multiples |
US6356530B1 (en) | 1997-05-23 | 2002-03-12 | Cisco Technology, Inc. | Next hop selection in ATM networks |
US6122272A (en) | 1997-05-23 | 2000-09-19 | Cisco Technology, Inc. | Call size feedback on PNNI operation |
US6105064A (en) * | 1997-05-30 | 2000-08-15 | Novell, Inc. | System for placing packets on network for transmission from sending endnode to receiving endnode at times which are determined by window size and metering interval |
US6862284B1 (en) | 1997-06-17 | 2005-03-01 | Cisco Technology, Inc. | Format for automatic generation of unique ATM addresses used for PNNI |
US6081524A (en) | 1997-07-03 | 2000-06-27 | At&T Corp. | Frame relay switched data service |
US6078590A (en) | 1997-07-14 | 2000-06-20 | Cisco Technology, Inc. | Hierarchical routing knowledge for multicast packet routing |
US6055364A (en) | 1997-07-31 | 2000-04-25 | Cisco Technology, Inc. | Content-based filtering of multicast information |
US6285679B1 (en) * | 1997-08-22 | 2001-09-04 | Avici Systems, Inc. | Methods and apparatus for event-driven routing |
US6370145B1 (en) * | 1997-08-22 | 2002-04-09 | Avici Systems | Internet switch router |
US6212183B1 (en) | 1997-08-22 | 2001-04-03 | Cisco Technology, Inc. | Multiple parallel packet routing lookup |
US6157641A (en) | 1997-08-22 | 2000-12-05 | Cisco Technology, Inc. | Multiprotocol packet recognition and switching |
US6512766B2 (en) | 1997-08-22 | 2003-01-28 | Cisco Systems, Inc. | Enhanced internet packet routing lookup |
US20020091784A1 (en) * | 1997-09-10 | 2002-07-11 | Baker Richard A. | Web interface to a device and an electrical network control system |
DE19740107A1 (de) * | 1997-09-12 | 1999-03-18 | Alsthom Cge Alcatel | Verfahren zum Übertragen von Datenpaketen und zur Durchführung des Verfahrens geeignetes Netzelement |
JPH1198183A (ja) * | 1997-09-17 | 1999-04-09 | Toshiba Corp | 中継装置 |
JP3649367B2 (ja) * | 1997-09-26 | 2005-05-18 | ソニー株式会社 | パケット伝送制御方法および装置 |
JPH11103303A (ja) * | 1997-09-26 | 1999-04-13 | Sony Corp | ネットワーク資源予約制御方法および装置、受信端末、送信端末、並びに中継装置 |
US6343072B1 (en) | 1997-10-01 | 2002-01-29 | Cisco Technology, Inc. | Single-chip architecture for shared-memory router |
US6430182B1 (en) * | 1997-10-16 | 2002-08-06 | Nec Corporation | Fabric system and method for assigning identifier for fabric apparatus therefor |
US6163812A (en) * | 1997-10-20 | 2000-12-19 | International Business Machines Corporation | Adaptive fast path architecture for commercial operating systems and information server applications |
US6308216B1 (en) * | 1997-11-14 | 2001-10-23 | International Business Machines Corporation | Service request routing using quality-of-service data and network resource information |
US6671276B1 (en) * | 1997-11-18 | 2003-12-30 | Nec Corporation | Switch based network architecture for IP multicast and integrated services |
WO1999027684A1 (fr) * | 1997-11-25 | 1999-06-03 | Packeteer, Inc. | Procede de classification automatique du trafic dans un reseau de communication par paquet |
US6591299B2 (en) | 1997-11-25 | 2003-07-08 | Packeteer, Inc. | Method for automatically classifying traffic with enhanced hierarchy in a packet communications network |
US7283561B1 (en) * | 1997-12-12 | 2007-10-16 | Level 3 Communications, Llc | Secure network architecture with quality of service |
WO1999031871A2 (fr) * | 1997-12-16 | 1999-06-24 | Sourcenet Corporation | Procede et dispositif de reception de diffusions multiples d'animations video numeriques integrales, de donnees et de voix interactives, via un circuit de lignes d'abonnes numeriques |
FI974558A (fi) * | 1997-12-18 | 1999-06-19 | Nokia Mobile Phones Ltd | Resurssin varaus liikkuvassa Internet-protokollassa |
ATE295664T1 (de) * | 1997-12-30 | 2005-05-15 | Nokia Corp | Breitband zellulare netzwerkvorrichtung |
US6111877A (en) | 1997-12-31 | 2000-08-29 | Cisco Technology, Inc. | Load sharing across flows |
US6404738B1 (en) * | 1998-01-21 | 2002-06-11 | Nec Usa, Inc. | Dynamic network bandwidth allocation for multimedia applications with soft quality-of-service requirements |
US6553000B1 (en) * | 1998-01-27 | 2003-04-22 | Alcatel Internetworking (Pe), Inc. | Method and apparatus for forwarding network traffic |
JPH11261567A (ja) * | 1998-03-09 | 1999-09-24 | Fujitsu Ltd | パケット転送装置 |
FI110987B (fi) * | 1998-03-31 | 2003-04-30 | Nokia Corp | Menetelmä tiedonsiirtovirtausten kytkemiseksi |
US6853638B2 (en) * | 1998-04-01 | 2005-02-08 | Cisco Technology, Inc. | Route/service processor scalability via flow-based distribution of traffic |
US6343083B1 (en) * | 1998-04-09 | 2002-01-29 | Alcatel Usa Sourcing, L.P. | Method and apparatus for supporting a connectionless communication protocol over an ATM network |
JPH11308253A (ja) * | 1998-04-20 | 1999-11-05 | Honda Motor Co Ltd | ネットワーク・システム |
US6151633A (en) * | 1998-04-20 | 2000-11-21 | Sun Microsystems, Inc. | Method and apparatus for routing and congestion control in multicast networks |
JP3805101B2 (ja) * | 1998-04-23 | 2006-08-02 | 富士通株式会社 | 通信システム |
US6529498B1 (en) | 1998-04-28 | 2003-03-04 | Cisco Technology, Inc. | Routing support for point-to-multipoint connections |
US6600724B1 (en) | 1998-04-28 | 2003-07-29 | Cisco Technology, Inc. | Routing table structures |
US6563798B1 (en) | 1998-06-29 | 2003-05-13 | Cisco Technology, Inc. | Dynamically created service class-based routing tables |
JP3233208B2 (ja) * | 1998-04-30 | 2001-11-26 | 日本電気株式会社 | レイヤ3フロースイッチング方法 |
US6865160B1 (en) * | 1998-05-04 | 2005-03-08 | Hewlett-Packard Development Company, L.P. | Broadcast tree determination in load balancing switch protocols |
AU747498B2 (en) * | 1998-05-26 | 2002-05-16 | Tele-Ip Limited | Trunk management system for telecommunications |
AUPP372398A0 (en) * | 1998-05-26 | 1998-06-18 | Martin Communications Pty Ltd | Microwave network management systems |
JP3109591B2 (ja) * | 1998-05-29 | 2000-11-20 | 日本電気株式会社 | Atm交換機 |
US6195714B1 (en) * | 1998-06-08 | 2001-02-27 | Nortel Networks Limited | System for transferring STM calls through ATM network by converting the STM calls to ATM and vice versa at the edge nodes of ATM network |
US6980543B1 (en) | 1998-06-19 | 2005-12-27 | Juniper Networks, Inc. | Interconnect network for operation within a communication node |
CN100385876C (zh) * | 1998-06-19 | 2008-04-30 | 杜松网络公司 | 在通信节点提供atm和ip服务质量特性的设施和方法 |
US6370121B1 (en) | 1998-06-29 | 2002-04-09 | Cisco Technology, Inc. | Method and system for shortcut trunking of LAN bridges |
US6625156B2 (en) * | 1998-06-29 | 2003-09-23 | Nortel Networks Limited | Method of implementing quality-of-service data communications over a short-cut path through a routed network |
US6400713B1 (en) * | 1998-06-30 | 2002-06-04 | Alcatel Usa Sourcing, L.P. | Integrated element manager and integrated multi-services access platform |
US6377577B1 (en) | 1998-06-30 | 2002-04-23 | Cisco Technology, Inc. | Access control list processing in hardware |
US6182147B1 (en) | 1998-07-31 | 2001-01-30 | Cisco Technology, Inc. | Multicast group routing using unidirectional links |
US6308219B1 (en) | 1998-07-31 | 2001-10-23 | Cisco Technology, Inc. | Routing table lookup implemented using M-trie having nodes duplicated in multiple memory banks |
JP3144388B2 (ja) * | 1998-08-07 | 2001-03-12 | 日本電気株式会社 | コネクション開放方法及びその装置 |
US6389506B1 (en) | 1998-08-07 | 2002-05-14 | Cisco Technology, Inc. | Block mask ternary cam |
US6697361B2 (en) * | 1998-09-15 | 2004-02-24 | Nortel Networks Limited | Method and apparatus for stream aggregation in a multiprotocol label switching network environment |
AU6504499A (en) * | 1998-10-01 | 2000-04-17 | Cornice Communications, Inc. | Network to network bandwidth on demand |
US6320874B1 (en) * | 1998-10-07 | 2001-11-20 | Nortel Networks Limited | Establishing and terminating connections in a mixed protocol network |
US6826368B1 (en) * | 1998-10-20 | 2004-11-30 | Lucent Technologies Inc. | Wavelength division multiplexing (WDM) with multi-frequency lasers and optical couplers |
JP3519616B2 (ja) * | 1998-10-21 | 2004-04-19 | 株式会社日立製作所 | 中継装置 |
CA2281431A1 (fr) * | 1998-10-28 | 2000-04-28 | Lucent Technologies Inc. | Connexion mobile/tcp et methode d'etablissement et de maintien d'une connexion mobile/tcp |
US6563793B1 (en) | 1998-11-25 | 2003-05-13 | Enron Warpspeed Services, Inc. | Method and apparatus for providing guaranteed quality/class of service within and across networks using existing reservation protocols and frame formats |
EP1014746B1 (fr) * | 1998-12-23 | 2004-09-22 | Alcatel | Procédé d'acheminement de type raccourci et de diffusion |
US20030133436A1 (en) * | 1998-12-28 | 2003-07-17 | Monica Patel | Telephone network management method and devices |
US6771642B1 (en) | 1999-01-08 | 2004-08-03 | Cisco Technology, Inc. | Method and apparatus for scheduling packets in a packet switch |
US6970473B1 (en) * | 1999-02-18 | 2005-11-29 | Sony Corporation | Communication method and communication apparatus |
US6519254B1 (en) * | 1999-02-26 | 2003-02-11 | Lucent Technologies Inc. | RSVP-based tunnel protocol providing integrated services |
EP1032164A1 (fr) * | 1999-02-26 | 2000-08-30 | International Business Machines Corporation | Procédé d'autoaprentissage pour les noeuds de commutation d' un réseau de transmission de données |
US6628617B1 (en) * | 1999-03-03 | 2003-09-30 | Lucent Technologies Inc. | Technique for internetworking traffic on connectionless and connection-oriented networks |
US6538416B1 (en) * | 1999-03-09 | 2003-03-25 | Lucent Technologies Inc. | Border gateway reservation protocol for tree-based aggregation of inter-domain reservations |
US6757791B1 (en) | 1999-03-30 | 2004-06-29 | Cisco Technology, Inc. | Method and apparatus for reordering packet data units in storage queues for reading and writing memory |
US6760331B1 (en) | 1999-03-31 | 2004-07-06 | Cisco Technology, Inc. | Multicast routing with nearest queue first allocation and dynamic and static vector quantization |
US6603772B1 (en) | 1999-03-31 | 2003-08-05 | Cisco Technology, Inc. | Multicast routing with multicast virtual output queues and shortest queue first allocation |
US6801502B1 (en) * | 1999-05-07 | 2004-10-05 | At&T Corp. | Method and apparatus for load-sensitive routing of long-lived packet flows |
US6487206B1 (en) * | 1999-05-24 | 2002-11-26 | 3Com Corporation | Method and apparatus for adjusting the local service policy within an ATM switch based on non-ATM protocol service parameters |
US6768717B1 (en) | 1999-05-28 | 2004-07-27 | Network Equipment Technologies, Inc. | Apparatus and method for traffic shaping in a network switch |
US6822971B1 (en) * | 1999-05-28 | 2004-11-23 | Nokia Corporation | Apparatus, and association method, for identifying data with an address |
US6850987B1 (en) * | 1999-06-01 | 2005-02-01 | Fastforward Networks, Inc. | System for multipoint infrastructure transport in a computer network |
CA2376214A1 (fr) * | 1999-06-08 | 2000-12-14 | The Trustees Of Columbia University In The City Of New York | Appareillage de telephonie reseau et systeme destine a la telephonie internet/intranet |
AU5879800A (en) | 1999-06-18 | 2001-01-09 | Trustees Of Columbia University In The City Of New York, The | System and method for receiving over a network a broadcast from a broadcast source |
EP1063814A1 (fr) * | 1999-06-24 | 2000-12-27 | Alcatel | Procédé pour la transmission des paquets multidestinataires |
US6914907B1 (en) * | 1999-08-05 | 2005-07-05 | Alcatel Canada Inc. | Method and apparatus for providing multi-cast transmissions using a distributed router |
US7136387B2 (en) * | 1999-08-09 | 2006-11-14 | Mci, Llc | Method of and system for providing quality of service in IP telephony |
US6633587B1 (en) * | 1999-08-26 | 2003-10-14 | Worldcom, Inc. | System and method for delivering reliable datagram service through connection-oriented service |
US6785226B1 (en) * | 1999-09-01 | 2004-08-31 | Carriercomm, Inc. | System and method for data routing over a network |
US6987769B1 (en) * | 1999-09-08 | 2006-01-17 | Qwest Communications International Inc. | System and method for dynamic distributed communication |
US8005077B1 (en) | 1999-09-08 | 2011-08-23 | Qwest Communications International Inc. | Distributively routed VDSL and high-speed information packets |
US7388846B1 (en) | 1999-09-08 | 2008-06-17 | Qwest Communications International Inc. | Cellularized packetized voice and data |
US7561895B1 (en) | 1999-09-08 | 2009-07-14 | Qwest Communications International, Inc. | Reverse sectorization wireless communication |
US6483470B1 (en) | 1999-09-08 | 2002-11-19 | Qwest Communications International, Inc. | Power supply for a light pole mounted wireless antenna |
US6831902B1 (en) | 1999-09-08 | 2004-12-14 | Qwest Communications International, Inc. | Routing information packets in a distributed network |
US6598034B1 (en) | 1999-09-21 | 2003-07-22 | Infineon Technologies North America Corp. | Rule based IP data processing |
KR20010028832A (ko) * | 1999-09-27 | 2001-04-06 | 최항석 | 비접속형 프로토콜 기반의 웹서비스상에서 접속형 프로토콜 기반의 서비스를 지원하기 위한 시스템 |
US7106756B1 (en) | 1999-10-12 | 2006-09-12 | Mci, Inc. | Customer resources policy control for IP traffic delivery |
US6636895B1 (en) * | 1999-10-13 | 2003-10-21 | Nortel Networks Limited | System, device, and method for distributing multicast routing information in a protocol independent multicast network |
US6977898B1 (en) * | 1999-10-15 | 2005-12-20 | Cisco Technology, Inc. | Method for supporting high priority calls on a congested WAN link |
US6765927B1 (en) * | 1999-10-20 | 2004-07-20 | Alcatel | RSVP proxy service for communication network |
US6556544B1 (en) * | 1999-10-22 | 2003-04-29 | Nortel Networks Limited | Method and system for provisioning network resources for dynamic multicast groups |
US7630986B1 (en) * | 1999-10-27 | 2009-12-08 | Pinpoint, Incorporated | Secure data interchange |
US6697338B1 (en) * | 1999-10-28 | 2004-02-24 | Lucent Technologies Inc. | Determination of physical topology of a communication network |
US7369536B2 (en) * | 1999-11-02 | 2008-05-06 | Verizon Business Global Llc | Method for providing IP telephony with QoS using end-to-end RSVP signaling |
US6970930B1 (en) | 1999-11-05 | 2005-11-29 | Mci, Inc. | Method and system of providing differentiated services |
US6570885B1 (en) * | 1999-11-12 | 2003-05-27 | International Business Machines Corporation | Segment-controlled process for controlling castouts from a communication cache in a port in any of multiple nodes in a communications network |
US6349210B1 (en) | 1999-11-12 | 2002-02-19 | Itt Manufacturing Enterprises, Inc. | Method and apparatus for broadcasting messages in channel reservation communication systems |
US6980537B1 (en) | 1999-11-12 | 2005-12-27 | Itt Manufacturing Enterprises, Inc. | Method and apparatus for communication network cluster formation and transmission of node link status messages with reduced protocol overhead traffic |
US6349091B1 (en) | 1999-11-12 | 2002-02-19 | Itt Manufacturing Enterprises, Inc. | Method and apparatus for controlling communication links between network nodes to reduce communication protocol overhead traffic |
US6385174B1 (en) * | 1999-11-12 | 2002-05-07 | Itt Manufacturing Enterprises, Inc. | Method and apparatus for transmission of node link status messages throughout a network with reduced communication protocol overhead traffic |
US6598088B1 (en) * | 1999-12-30 | 2003-07-22 | Nortel Networks Corporation | Port switch |
US20020029287A1 (en) * | 2000-02-02 | 2002-03-07 | Yechiam Yemini | Method and apparatus for dynamically addressing a circuits based network |
US6445696B1 (en) | 2000-02-25 | 2002-09-03 | Network Equipment Technologies, Inc. | Efficient variable rate coding of voice over asynchronous transfer mode |
US6700883B1 (en) * | 2000-04-05 | 2004-03-02 | International Business Machines Corporation | Algorithm to bypass L4 processing in an internet protocol forwarding processor |
IL136207A0 (en) * | 2000-05-17 | 2001-05-20 | Naftel Technologies Ltd | An e-mail management system for wireless pcd |
US6732182B1 (en) * | 2000-05-17 | 2004-05-04 | Worldcom, Inc. | Method for generating packet loss report by a data coordinator in a multicast data transmission network utilizing a group shortest path tree |
US7039709B1 (en) | 2000-05-31 | 2006-05-02 | International Business Machines Corporation | Dynamically selection of most efficient transmission medium and route from a client browser |
CN100499872C (zh) * | 2000-06-02 | 2009-06-10 | 雷迪塞斯公司 | 没有回声消除的ip语音通信的装置和方法 |
AU2001268652A1 (en) * | 2000-06-24 | 2002-01-08 | Motorola, Inc. | A communication system that provides access queuing for communication services |
US6876627B1 (en) * | 2000-06-29 | 2005-04-05 | Cisco Technology, Inc. | Raincheck on voice over packet network calling |
US7111163B1 (en) | 2000-07-10 | 2006-09-19 | Alterwan, Inc. | Wide area network using internet with quality of service |
WO2002006968A1 (fr) * | 2000-07-17 | 2002-01-24 | Teraglobal Communications Corp. | Procede et systeme permettant d'assurer la qualite de service entre des reseaux a l'aide d'un protocole de signalisation |
US7023846B1 (en) * | 2000-07-18 | 2006-04-04 | Nortel Networks Limited | System, device, and method for establishing and removing a label switched path in a communication network |
US6731649B1 (en) | 2000-07-26 | 2004-05-04 | Rad Data Communication Ltd. | TDM over IP (IP circuit emulation service) |
US7307993B2 (en) * | 2000-08-08 | 2007-12-11 | At&T Labs, Inc. | Controller based call control for ATM SVC signaling |
CN101695058A (zh) | 2000-08-11 | 2010-04-14 | 纽约市哥伦比亚大学托管会 | 在数据网络通话系统中提供通信服务的方法 |
US7586899B1 (en) * | 2000-08-18 | 2009-09-08 | Juniper Networks, Inc. | Methods and apparatus providing an overlay network for voice over internet protocol applications |
US7002993B1 (en) * | 2000-08-18 | 2006-02-21 | Juniper Networks, Inc. | Method and apparatus providing media aggregation in a packet-switched network |
US7092390B2 (en) * | 2000-09-07 | 2006-08-15 | Sbc Technology Resources, Inc. | Internal substitution bi-level addressing for compatible public networks |
KR100699470B1 (ko) * | 2000-09-27 | 2007-03-26 | 삼성전자주식회사 | 멀티레이어 패킷 처리 장치 |
US6766354B1 (en) * | 2000-09-28 | 2004-07-20 | Intel Corporation | Speed sensitive content delivery in a client-server network |
GB2367978A (en) * | 2000-10-07 | 2002-04-17 | Marconi Comm Ltd | Communications protocol for connecting a mobile terminal to a node using internet protocol |
US7444422B1 (en) * | 2000-10-10 | 2008-10-28 | Nortel Networks Limited | Multicast when forwarding information is unknown |
US6807165B2 (en) | 2000-11-08 | 2004-10-19 | Meshnetworks, Inc. | Time division protocol for an ad-hoc, peer-to-peer radio network having coordinating channel access to shared parallel data channels with separate reservation channel |
US7743125B1 (en) * | 2000-11-09 | 2010-06-22 | General Electric Company | Computer multiple communications port unit |
US7072650B2 (en) * | 2000-11-13 | 2006-07-04 | Meshnetworks, Inc. | Ad hoc peer-to-peer mobile radio access system interfaced to the PSTN and cellular networks |
US6873839B2 (en) | 2000-11-13 | 2005-03-29 | Meshnetworks, Inc. | Prioritized-routing for an ad-hoc, peer-to-peer, mobile radio access system |
US7023811B2 (en) * | 2001-01-17 | 2006-04-04 | Intel Corporation | Switched fabric network and method of mapping nodes using batch requests |
JP2002278903A (ja) * | 2001-03-15 | 2002-09-27 | Sony Corp | 情報処理装置および方法、記録媒体、並びにプログラム |
US6958992B2 (en) * | 2001-03-16 | 2005-10-25 | Mitel Corporation | Registering an IP phone with an IP phone switch |
US7796608B2 (en) | 2001-03-20 | 2010-09-14 | Verizon Business Global Llc | Edge-based per-flow QoS admission control in a data network |
US7209439B2 (en) * | 2001-03-20 | 2007-04-24 | Mci, Llc | Pool-based resource management in a data network |
US7069337B2 (en) * | 2001-03-20 | 2006-06-27 | Mci, Inc. | Policy-based synchronization of per-class resources between routers in a data network |
US7151769B2 (en) * | 2001-03-22 | 2006-12-19 | Meshnetworks, Inc. | Prioritized-routing for an ad-hoc, peer-to-peer, mobile radio access system based on battery-power levels and type of service |
US7664119B2 (en) * | 2001-03-30 | 2010-02-16 | Intel Corporation | Method and apparatus to perform network routing |
US20020150099A1 (en) * | 2001-04-13 | 2002-10-17 | Pung Hung Keng | Multicast routing method satisfying quality of service constraints, software and devices |
US7246173B2 (en) * | 2001-04-16 | 2007-07-17 | Nokia Corporation | Method and apparatus for classifying IP data |
EP1395942A4 (fr) * | 2001-06-14 | 2009-07-22 | Meshnetworks Inc | Algorithmes de routage integres mis en oeuvre sous une couche de routage ip d'une pile de protocoles a architecture logicielle dans un reseau ad hoc mobile |
US7339903B2 (en) * | 2001-06-14 | 2008-03-04 | Qualcomm Incorporated | Enabling foreign network multicasting for a roaming mobile node, in a foreign network, using a persistent address |
WO2002103966A1 (fr) * | 2001-06-15 | 2002-12-27 | British Telecommunications Public Limited Company | Réseau de communication à évitement d'encombrement |
US7027400B2 (en) * | 2001-06-26 | 2006-04-11 | Flarion Technologies, Inc. | Messages and control methods for controlling resource allocation and flow admission control in a mobile communications system |
US8000241B2 (en) * | 2001-06-26 | 2011-08-16 | Qualcomm Incorporated | Methods and apparatus for controlling access link packet flow aggregation and resource allocation in a mobile communications system |
TWI237480B (en) * | 2001-06-27 | 2005-08-01 | Flarion Technologies Inc | Methods and apparatus for supporting group communications |
JP2003018214A (ja) * | 2001-07-02 | 2003-01-17 | Hitachi Ltd | パケット通信装置,パケット通信装置におけるマルチキャストパケットの通信方法及びパケット通信装置の設定方法 |
US7139275B1 (en) * | 2001-07-16 | 2006-11-21 | Cisco Technology, Inc. | Providing differentiated services on ATM switched virtual circuits when transporting IP packets |
US7133409B1 (en) * | 2001-07-19 | 2006-11-07 | Richard Willardson | Programmable packet filtering in a prioritized chain |
US7072323B2 (en) * | 2001-08-15 | 2006-07-04 | Meshnetworks, Inc. | System and method for performing soft handoff in a wireless data network |
US7349380B2 (en) * | 2001-08-15 | 2008-03-25 | Meshnetworks, Inc. | System and method for providing an addressing and proxy scheme for facilitating mobility of wireless nodes between wired access points on a core network of a communications network |
US7206294B2 (en) * | 2001-08-15 | 2007-04-17 | Meshnetworks, Inc. | Movable access points and repeaters for minimizing coverage and capacity constraints in a wireless communications network and a method for using the same |
US7613458B2 (en) * | 2001-08-28 | 2009-11-03 | Meshnetworks, Inc. | System and method for enabling a radio node to selectably function as a router in a wireless communications network |
US7145903B2 (en) * | 2001-09-06 | 2006-12-05 | Meshnetworks, Inc. | Multi-master bus architecture for system-on-chip designs |
EP1430619B1 (fr) * | 2001-09-25 | 2007-05-02 | Meshnetworks, Inc. | Système et procédé mettant en oeuvre des algorithmeset des protocoles permettant les protocoles d'access multiple par détection de porteuse (CSMA) dans des réseaux sans fil |
US6754188B1 (en) | 2001-09-28 | 2004-06-22 | Meshnetworks, Inc. | System and method for enabling a node in an ad-hoc packet-switched wireless communications network to route packets based on packet content |
US6768730B1 (en) | 2001-10-11 | 2004-07-27 | Meshnetworks, Inc. | System and method for efficiently performing two-way ranging to determine the location of a wireless node in a communications network |
WO2003037009A1 (fr) * | 2001-10-23 | 2003-05-01 | Meshnetworks, Inc. | Systeme et procede permettant d'obtenir un protocole de resolution d'adresse optimise en ce qui concerne l'encombrement, pour des reseaux ad-hoc sans fil |
US6982982B1 (en) | 2001-10-23 | 2006-01-03 | Meshnetworks, Inc. | System and method for providing a congestion optimized address resolution protocol for wireless ad-hoc networks |
US6771666B2 (en) | 2002-03-15 | 2004-08-03 | Meshnetworks, Inc. | System and method for trans-medium address resolution on an ad-hoc network with at least one highly disconnected medium having multiple access points to other media |
MXPA04003894A (es) | 2001-10-25 | 2004-09-13 | Worldcom Inc | Indicador de calidad de sesion de comunicacion. |
US7181214B1 (en) | 2001-11-13 | 2007-02-20 | Meshnetworks, Inc. | System and method for determining the measure of mobility of a subscriber device in an ad-hoc wireless network with fixed wireless routers and wide area network (WAN) access points |
US7136587B1 (en) | 2001-11-15 | 2006-11-14 | Meshnetworks, Inc. | System and method for providing simulated hardware-in-the-loop testing of wireless communications networks |
US6728545B1 (en) | 2001-11-16 | 2004-04-27 | Meshnetworks, Inc. | System and method for computing the location of a mobile terminal in a wireless communications network |
US7221686B1 (en) | 2001-11-30 | 2007-05-22 | Meshnetworks, Inc. | System and method for computing the signal propagation time and the clock correction for mobile stations in a wireless network |
AU2002365829A1 (en) * | 2001-12-03 | 2003-06-17 | Ram Gopal Lakshmi Narayanan | Context filter in a mobile node |
WO2003052962A1 (fr) * | 2001-12-14 | 2003-06-26 | Interdigital Technology Corporation | Systeme de transfert de contexte pour dispositifs internet sans fil |
US7190672B1 (en) | 2001-12-19 | 2007-03-13 | Meshnetworks, Inc. | System and method for using destination-directed spreading codes in a multi-channel metropolitan area wireless communications network |
US7280545B1 (en) | 2001-12-20 | 2007-10-09 | Nagle Darragh J | Complex adaptive routing system and method for a nodal communication network |
US7180875B1 (en) | 2001-12-20 | 2007-02-20 | Meshnetworks, Inc. | System and method for performing macro-diversity selection and distribution of routes for routing data packets in Ad-Hoc networks |
US7106707B1 (en) | 2001-12-20 | 2006-09-12 | Meshnetworks, Inc. | System and method for performing code and frequency channel selection for combined CDMA/FDMA spread spectrum communication systems |
US7072618B1 (en) | 2001-12-21 | 2006-07-04 | Meshnetworks, Inc. | Adaptive threshold selection system and method for detection of a signal in the presence of interference |
US7212536B2 (en) * | 2001-12-27 | 2007-05-01 | Alcatel-Lucent Canada Inc. | User priority mapping in bridged VLANS |
US6674790B1 (en) | 2002-01-24 | 2004-01-06 | Meshnetworks, Inc. | System and method employing concatenated spreading sequences to provide data modulated spread signals having increased data rates with extended multi-path delay spread |
US20030118028A1 (en) * | 2002-02-27 | 2003-06-26 | Neal Warren Michael | Method and system of ensuring quality of service between networks using a signaling protocol |
US6617990B1 (en) | 2002-03-06 | 2003-09-09 | Meshnetworks | Digital-to-analog converter using pseudo-random sequences and a method for using the same |
US7058018B1 (en) | 2002-03-06 | 2006-06-06 | Meshnetworks, Inc. | System and method for using per-packet receive signal strength indication and transmit power levels to compute path loss for a link for use in layer II routing in a wireless communication network |
US6904021B2 (en) | 2002-03-15 | 2005-06-07 | Meshnetworks, Inc. | System and method for providing adaptive control of transmit power and data rate in an ad-hoc communication network |
JP4199672B2 (ja) | 2002-03-15 | 2008-12-17 | メシュネットワークス、インコーポレイテッド | Ipアドレスからmacアドレスへのマッピングの自動構成およびゲートウェイの存在の発見を行うシステムおよび方法 |
US6987795B1 (en) | 2002-04-08 | 2006-01-17 | Meshnetworks, Inc. | System and method for selecting spreading codes based on multipath delay profile estimation for wireless transceivers in a communication network |
AU2003230821A1 (en) * | 2002-04-08 | 2003-10-27 | Flarion Technologies, Inc. | Support of disparate addressing plans and dynamic ha address allocation in mobile ip |
US7200149B1 (en) | 2002-04-12 | 2007-04-03 | Meshnetworks, Inc. | System and method for identifying potential hidden node problems in multi-hop wireless ad-hoc networks for the purpose of avoiding such potentially problem nodes in route selection |
US7366147B2 (en) * | 2002-04-15 | 2008-04-29 | Qualcomm Incorporated | Methods and apparatus for tunneling between different addressing domains |
US7623497B2 (en) * | 2002-04-15 | 2009-11-24 | Qualcomm, Incorporated | Methods and apparatus for extending mobile IP |
US7342903B2 (en) * | 2002-04-15 | 2008-03-11 | Qualcomm Incorporated | Methods and apparatus for the utilization of multiple uplinks in reverse tunneling |
US7697420B1 (en) | 2002-04-15 | 2010-04-13 | Meshnetworks, Inc. | System and method for leveraging network topology for enhanced security |
US7107498B1 (en) | 2002-04-16 | 2006-09-12 | Methnetworks, Inc. | System and method for identifying and maintaining reliable infrastructure links using bit error rate data in an ad-hoc communication network |
US6580981B1 (en) | 2002-04-16 | 2003-06-17 | Meshnetworks, Inc. | System and method for providing wireless telematics store and forward messaging for peer-to-peer and peer-to-peer-to-infrastructure a communication network |
US7480732B1 (en) * | 2002-04-22 | 2009-01-20 | Cisco Technology, Inc. | Multicasting method and system using an ATM switch |
US7215674B1 (en) | 2002-04-22 | 2007-05-08 | Cisco Technology, Inc. | Supporting applications sensitive to data loss on switched virtual circuits (SVCs) |
US7142524B2 (en) * | 2002-05-01 | 2006-11-28 | Meshnetworks, Inc. | System and method for using an ad-hoc routing algorithm based on activity detection in an ad-hoc network |
US20030206549A1 (en) * | 2002-05-03 | 2003-11-06 | Mody Sachin Satish | Method and apparatus for multicast delivery of information |
EP1361705A1 (fr) * | 2002-05-07 | 2003-11-12 | Alcatel | Methode pour transmettre des paquets de données sous forme de séquences de cellules, dans un sous-réseau de paquets de données |
US6970444B2 (en) | 2002-05-13 | 2005-11-29 | Meshnetworks, Inc. | System and method for self propagating information in ad-hoc peer-to-peer networks |
US7284268B2 (en) | 2002-05-16 | 2007-10-16 | Meshnetworks, Inc. | System and method for a routing device to securely share network data with a host utilizing a hardware firewall |
US7016306B2 (en) * | 2002-05-16 | 2006-03-21 | Meshnetworks, Inc. | System and method for performing multiple network routing and provisioning in overlapping wireless deployments |
US7167715B2 (en) * | 2002-05-17 | 2007-01-23 | Meshnetworks, Inc. | System and method for determining relative positioning in AD-HOC networks |
US7106703B1 (en) | 2002-05-28 | 2006-09-12 | Meshnetworks, Inc. | System and method for controlling pipeline delays by adjusting the power levels at which nodes in an ad-hoc network transmit data packets |
US7334048B1 (en) * | 2002-06-04 | 2008-02-19 | Extreme Networks, Inc. | Method and apparatus for fast route table update |
US7610027B2 (en) * | 2002-06-05 | 2009-10-27 | Meshnetworks, Inc. | Method and apparatus to maintain specification absorption rate at a wireless node |
US6744766B2 (en) | 2002-06-05 | 2004-06-01 | Meshnetworks, Inc. | Hybrid ARQ for a wireless Ad-Hoc network and a method for using the same |
US6687259B2 (en) | 2002-06-05 | 2004-02-03 | Meshnetworks, Inc. | ARQ MAC for ad-hoc communication networks and a method for using the same |
US7054126B2 (en) * | 2002-06-05 | 2006-05-30 | Meshnetworks, Inc. | System and method for improving the accuracy of time of arrival measurements in a wireless ad-hoc communications network |
AU2003238968A1 (en) * | 2002-06-11 | 2003-12-22 | Meshnetworks, Inc. | System and method for multicast media access in ad-hoc communication networks |
US7215638B1 (en) | 2002-06-19 | 2007-05-08 | Meshnetworks, Inc. | System and method to provide 911 access in voice over internet protocol systems without compromising network security |
US7539198B1 (en) | 2002-06-26 | 2009-05-26 | Cisco Technology, Inc. | System and method to provide node-to-node connectivity in a communications network |
US7072432B2 (en) * | 2002-07-05 | 2006-07-04 | Meshnetworks, Inc. | System and method for correcting the clock drift and maintaining the synchronization of low quality clocks in wireless networks |
US7796570B1 (en) | 2002-07-12 | 2010-09-14 | Meshnetworks, Inc. | Method for sparse table accounting and dissemination from a mobile subscriber device in a wireless mobile ad-hoc network |
US7046962B1 (en) | 2002-07-18 | 2006-05-16 | Meshnetworks, Inc. | System and method for improving the quality of range measurement based upon historical data |
US7042867B2 (en) * | 2002-07-29 | 2006-05-09 | Meshnetworks, Inc. | System and method for determining physical location of a node in a wireless network during an authentication check of the node |
US7272145B2 (en) * | 2002-07-31 | 2007-09-18 | At&T Knowledge Ventures, L.P. | Resource reservation protocol based guaranteed quality of service internet protocol connections over a switched network through proxy signaling |
US7065092B2 (en) * | 2002-07-31 | 2006-06-20 | Sbc Properties, L.P. | Resource reservation protocol based guaranteed quality of service internet protocol (IP) connections over a switched network using newly assigned IP addresses |
US7298750B2 (en) * | 2002-07-31 | 2007-11-20 | At&T Knowledge Ventures, L.P. | Enhancement of resource reservation protocol enabling short-cut internet protocol connections over a switched network |
US7301951B2 (en) * | 2002-07-31 | 2007-11-27 | At&T Knowledge Ventures, L.P. | Resource reservation protocol based guaranteed quality of service internet protocol connections over a switched network |
US7882346B2 (en) | 2002-10-15 | 2011-02-01 | Qualcomm Incorporated | Method and apparatus for providing authentication, authorization and accounting to roaming nodes |
US7869803B2 (en) * | 2002-10-15 | 2011-01-11 | Qualcomm Incorporated | Profile modification for roaming in a communications environment |
US20040083287A1 (en) * | 2002-10-25 | 2004-04-29 | Xia Gao | Terminal-based resource reservation protocol |
ATE515856T1 (de) * | 2003-01-13 | 2011-07-15 | Meshnetworks Inc | System und verfahren zur erzielung kontinuierlicherkonnektivität mit einem zugangspunkt oder gateway in einem drahtlosennetzwerk |
KR100487131B1 (ko) * | 2003-02-15 | 2005-05-03 | 삼성전자주식회사 | 내부 채널 공유 기능이 구비된 에이티엠 기반 라벨 스위칭라우터 및 그를 이용한 내부 채널 공유 방법 |
KR20050117557A (ko) * | 2003-03-13 | 2005-12-14 | 메시네트웍스, 인코포레이티드 | 저속 중앙처리장치를 이용하는 무선 애드-혹 통신네트워크에 있어서 이동 가입자에 대한 위치계산의정확도를 향상시키기 위한 시스템 및 방법 |
US7171220B2 (en) * | 2003-03-14 | 2007-01-30 | Meshnetworks, Inc. | System and method for analyzing the precision of geo-location services in a wireless network terminal |
US7596539B2 (en) * | 2003-05-29 | 2009-09-29 | International Business Machines Corporation | Method and apparatus for providing connection information of functional components within a computer system |
US7215966B2 (en) * | 2003-06-05 | 2007-05-08 | Meshnetworks, Inc. | System and method for determining location of a device in a wireless communication network |
WO2004109476A2 (fr) * | 2003-06-05 | 2004-12-16 | Meshnetworks, Inc. | Systeme et procede permettant d'optimiser l'utilisation des canaux dans un reseau de communication sans fil multicanaux |
WO2004114690A1 (fr) * | 2003-06-05 | 2004-12-29 | Meshnetworks, Inc. | Optimisation de l'acheminement dans des reseaux de radiocommunication ad hoc |
US7116632B2 (en) * | 2003-06-05 | 2006-10-03 | Meshnetworks, Inc. | System and method for determining synchronization point in OFDM modems for accurate time of flight measurement |
EP1632045B1 (fr) | 2003-06-06 | 2013-08-21 | Meshnetworks, Inc. | Systeme et procede permettant la fiabilite et la differenciation de services dans des reseaux particuliers |
EP1631916A1 (fr) * | 2003-06-06 | 2006-03-08 | Meshnetworks, Inc. | Procede permettant de mesurer la fiabilite de liaison vers un protocole de routage dans un reseau ad hoc sans fil |
KR100752947B1 (ko) * | 2003-06-06 | 2007-08-30 | 메시네트웍스, 인코포레이티드 | 빌딩들 내부의 무선 디바이스들의 위치를 정확하게연산하기 위한 mac 프로토콜 |
ATE529962T1 (de) * | 2003-06-06 | 2011-11-15 | Meshnetworks Inc | Verfahren zur verbesserung der gesamtleistungsfähigkeit eines drahtlosen kommunikationsnetzes |
US7447203B2 (en) | 2003-07-29 | 2008-11-04 | At&T Intellectual Property I, L.P. | Broadband access for virtual private networks |
US7739394B2 (en) * | 2003-07-29 | 2010-06-15 | At&T Intellectual Property I, L.P. | Bi-level addressing for internet protocol broadband access |
US20050071494A1 (en) * | 2003-09-30 | 2005-03-31 | Rundquist William A. | Method and apparatus for providing fixed bandwidth communications over a local area network |
JP4328283B2 (ja) * | 2003-10-22 | 2009-09-09 | パナソニック株式会社 | パケット配送制御方法 |
US20070297349A1 (en) * | 2003-11-28 | 2007-12-27 | Ofir Arkin | Method and System for Collecting Information Relating to a Communication Network |
US7602721B1 (en) * | 2003-12-22 | 2009-10-13 | Extreme Networks, Inc. | Methods and systems for fine grain bandwidth allocation in a switched network element |
KR20050075488A (ko) * | 2004-01-15 | 2005-07-21 | 유티스타콤코리아 유한회사 | Ip 패킷 데이터의 전송이 가능한 hans-5 스위치라우터 |
US7697501B2 (en) * | 2004-02-06 | 2010-04-13 | Qualcomm Incorporated | Methods and apparatus for separating home agent functionality |
US7948931B2 (en) * | 2004-03-01 | 2011-05-24 | The Charles Stark Draper Laboratory, Inc. | MANET routing based on best estimate of expected position |
US7756033B2 (en) * | 2004-05-03 | 2010-07-13 | Verizon Business Global Llc | Systems and methods for managing multicast data transmissions |
US7821948B2 (en) * | 2004-05-27 | 2010-10-26 | Alcatel Lucent | Network management system and method provisioning OAM support for multicast communications sessions |
JP2005346414A (ja) * | 2004-06-03 | 2005-12-15 | Fujitsu Ltd | トレース処理プログラム、方法及び装置 |
US7167463B2 (en) * | 2004-10-07 | 2007-01-23 | Meshnetworks, Inc. | System and method for creating a spectrum agile wireless multi-hopping network |
US8145908B1 (en) | 2004-10-29 | 2012-03-27 | Akamai Technologies, Inc. | Web content defacement protection system |
US7703087B1 (en) * | 2004-12-10 | 2010-04-20 | Oracle America, Inc. | Reducing layout conflicts among code units with caller-callee relationships |
US7792860B2 (en) * | 2005-03-25 | 2010-09-07 | Oracle International Corporation | System for change notification and persistent caching of dynamically computed membership of rules-based lists in LDAP |
US9066344B2 (en) | 2005-09-19 | 2015-06-23 | Qualcomm Incorporated | State synchronization of access routers |
US20070070996A1 (en) * | 2005-09-26 | 2007-03-29 | Oran David R | Port hopping scheme for peer-to-peer connections |
US8265061B1 (en) * | 2005-10-31 | 2012-09-11 | Verizon Services Corp. | Optimal expansion of a telecommunications network |
US20070110437A1 (en) * | 2005-11-14 | 2007-05-17 | Broadcom Corporation, A California Corporation | Bridging end point device supporting inter access point communication |
US7600044B2 (en) * | 2006-06-13 | 2009-10-06 | Inter-Tel, Inc. | System and method for networked endpoint registration |
JP4744429B2 (ja) * | 2006-12-29 | 2011-08-10 | Kddi株式会社 | 拡張された保守ドメインレベル管理方法、通信装置、プログラム及びデータ構造 |
US7826358B2 (en) * | 2006-12-29 | 2010-11-02 | Ellacoya Networks, Inc. | Hierarchical virtual queuing |
US20080240096A1 (en) | 2007-03-29 | 2008-10-02 | Twisted Pair Solutions, Inc. | Method, apparatus, system, and article of manufacture for providing distributed convergence nodes in a communication network environment |
KR101548959B1 (ko) * | 2008-06-04 | 2015-09-01 | 삼성전자주식회사 | 패킷 통신 시스템에서 네트워크 주소 설정을 위한 장치 및방법 |
CA2726887C (fr) | 2008-07-01 | 2017-03-07 | Twisted Pair Solutions, Inc. | Methode, appareil, systeme et article manufacture fournissant des informations fiables sur faible largeur de bande via des reseaux uni et multidiffusion en mode mixte |
CN102365846B (zh) * | 2009-03-26 | 2014-07-02 | 日本电气株式会社 | 路由设置服务器、路由设置方法和路由设置程序 |
US8238538B2 (en) | 2009-05-28 | 2012-08-07 | Comcast Cable Communications, Llc | Stateful home phone service |
US8971390B2 (en) * | 2009-06-15 | 2015-03-03 | Infineon Technologies Ag | Power saving in a communication device |
US11042211B2 (en) | 2009-08-07 | 2021-06-22 | Advanced Processor Architectures, Llc | Serially connected computing nodes in a distributed computing system |
US8554506B2 (en) | 2009-08-07 | 2013-10-08 | Advanced Processor Srchitectures, LLC | Distributed computing |
US9645603B1 (en) | 2013-09-12 | 2017-05-09 | Advanced Processor Architectures, Llc | System clock distribution in a distributed computing environment |
US9429983B1 (en) | 2013-09-12 | 2016-08-30 | Advanced Processor Architectures, Llc | System clock distribution in a distributed computing environment |
US8248951B2 (en) | 2009-09-11 | 2012-08-21 | At&T Intellectual Property I, Lp | Methods and apparatus to manage bypass paths in an internet protocol (IP) network |
US8745204B2 (en) * | 2010-03-12 | 2014-06-03 | Cisco Technology, Inc. | Minimizing latency in live virtual server migration |
US8411610B2 (en) * | 2010-05-11 | 2013-04-02 | Sparkmotion Inc. | Method for transmitting multi unicast information within broadcasted information |
US20120210018A1 (en) * | 2011-02-11 | 2012-08-16 | Rikard Mendel | System And Method for Lock-Less Multi-Core IP Forwarding |
KR101822940B1 (ko) * | 2011-12-12 | 2018-01-29 | 엘지전자 주식회사 | 수행 시간에 기초하여 장치 관리 명령을 수행하는 방법 및 장치 |
US9077562B2 (en) | 2012-06-08 | 2015-07-07 | Cisco Technology, Inc. | System and method for layer-2 multicast multipathing |
US9178837B2 (en) | 2012-07-17 | 2015-11-03 | Cisco Technology, Inc. | System and method for layer-2 network routing |
US8982710B2 (en) * | 2012-09-28 | 2015-03-17 | Broadcom Corporation | Ethernet operation and maintenance (OAM) with flexible forwarding |
US9846238B2 (en) * | 2013-03-11 | 2017-12-19 | Raven Industries, Inc. | Enhanced delivery of GNSS correction data through restricted networks |
WO2017053964A1 (fr) | 2015-09-25 | 2017-03-30 | Fsa Technologies, Inc. | Système d'établissement de priorités de flux de données et procédé |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0597487A2 (fr) * | 1992-11-12 | 1994-05-18 | Nec Corporation | Système de communication à ATM |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU661988B2 (en) * | 1991-01-31 | 1995-08-17 | Fujitsu Limited | Connectionless communication system |
EP0552385B1 (fr) * | 1991-08-21 | 2001-02-14 | International Business Machines Corporation | Services des données à ATM sans connexion |
JPH06318951A (ja) * | 1993-01-07 | 1994-11-15 | Toshiba Corp | セル転送方法およびセル転送システム |
JP3426646B2 (ja) * | 1993-04-20 | 2003-07-14 | 株式会社東芝 | ネットワークシステム、通信方法及び通信装置 |
US5450406A (en) * | 1993-04-20 | 1995-09-12 | Kabushiki Kaisha Toshiba | ATM communication system with high speed connection-less service function |
US5506847A (en) * | 1993-04-26 | 1996-04-09 | Kabushiki Kaisha Toshiba | ATM-lan system using broadcast channel for transferring link setting and chaining requests |
EP0660569A1 (fr) * | 1993-12-22 | 1995-06-28 | International Business Machines Corporation | Procédé et système pour améliorer le temps de traitement de la sélection de route dans un réseau de commutation de paquets à grande vitesse |
JPH07273801A (ja) * | 1994-03-29 | 1995-10-20 | Hitachi Ltd | ルータ装置 |
US5623605A (en) * | 1994-08-29 | 1997-04-22 | Lucent Technologies Inc. | Methods and systems for interprocess communication and inter-network data transfer |
JP3224963B2 (ja) * | 1994-08-31 | 2001-11-05 | 株式会社東芝 | ネットワーク接続装置及びパケット転送方法 |
JP3515263B2 (ja) * | 1995-05-18 | 2004-04-05 | 株式会社東芝 | ルータ装置、データ通信ネットワークシステム、ノード装置、データ転送方法及びネットワーク接続方法 |
US5638371A (en) * | 1995-06-27 | 1997-06-10 | Nec Usa, Inc. | Multiservices medium access control protocol for wireless ATM system |
US5781537A (en) * | 1995-07-07 | 1998-07-14 | International Business Machines Corporation | Setting up, taking down and maintaining connections in a communications network |
JPH0928505A (ja) | 1995-07-21 | 1997-02-04 | Okamura Corp | 椅子の背凭れ |
US6016319A (en) * | 1995-10-31 | 2000-01-18 | Lucent Technologies, Inc. | Communications system for transmission of datagram packets over connection-oriented networks |
US5892761A (en) * | 1995-10-31 | 1999-04-06 | Netscape Communications Corporation | Method and apparatus for routing data in collaborative computing system |
JP3420664B2 (ja) * | 1995-12-20 | 2003-06-30 | 株式会社東芝 | パケット送信ノード装置、パケット受信ノード装置及びコネクション設定方法 |
JP2002516042A (ja) * | 1996-01-31 | 2002-05-28 | イプシロン ネットワークス インコーポレイテッド | 伝送ネットワークにおいてパケットの経路指定とスイッチングとの間をダイナミックにシフトする改良された方法及び装置 |
US5907542A (en) * | 1996-04-15 | 1999-05-25 | Ascom Tech Ag | Dynamic assignment of signalling virtual channels for wireless ATM systems |
US5764645A (en) * | 1996-06-12 | 1998-06-09 | Microsoft Corporation | IP/ATM network adaptation |
US6069889A (en) * | 1996-10-02 | 2000-05-30 | International Business Machines Corporation | Aggregation of data flows on switched network paths |
US5828844A (en) * | 1996-10-08 | 1998-10-27 | At&T Corp. | Internet NCP over ATM |
US5903559A (en) * | 1996-12-20 | 1999-05-11 | Nec Usa, Inc. | Method for internet protocol switching over fast ATM cell transport |
-
1996
- 1996-12-20 US US08/771,559 patent/US5903559A/en not_active Expired - Lifetime
-
1997
- 1997-12-19 EP EP97122565A patent/EP0849970B1/fr not_active Expired - Lifetime
- 1997-12-19 AU AU48511/97A patent/AU727424B2/en not_active Ceased
- 1997-12-19 JP JP35041197A patent/JP2977029B2/ja not_active Expired - Fee Related
- 1997-12-19 DE DE69738865T patent/DE69738865D1/de not_active Expired - Lifetime
- 1997-12-19 CA CA002225321A patent/CA2225321C/fr not_active Expired - Fee Related
-
1998
- 1998-05-18 US US09/080,208 patent/US6343326B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0597487A2 (fr) * | 1992-11-12 | 1994-05-18 | Nec Corporation | Système de communication à ATM |
Non-Patent Citations (2)
Title |
---|
ESAKI H ET AL: "HIGH SPEED DATAGRAM DELIVERY OVER INTERNET USING ATM TECHNOLOGY" , IEICE TRANSACTIONS ON COMMUNICATIONS, INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, JP, VOL. E78-B, NR. 8, PAGE(S) 1208-1217 XP000539757 ISSN: 0916-8516 * paragraph [0002] - paragraph [0004] * * |
NEWMAN P ET AL: "Flow labelled IP: a connectionless approach to ATM" , PROCEEDINGS OF IEEE INFOCOM 1996. CONFERENCE ON COMPUTER COMMUNICATIONS. FIFTEENTH ANNUAL JOINT CONFERENCE OF THE IEEE COMPUTER AND COMMUNICATIONS SOCIETIES. NETWORKING THE NEXT GENERATION. SAN FRANCISCO, MAR. 24 - 28, 1996, PROCEEDINGS OF INFOCOM, L XP010158197 ISBN: 0-8186-7293-5 * paragraphs [0001]-[0005] * * |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0982899A2 (fr) * | 1998-08-28 | 2000-03-01 | Fujitsu Limited | Interface pour effectuer un contrôle de connection à la transition entre deux réseaux de communications |
EP0982899A3 (fr) * | 1998-08-28 | 2005-07-20 | Fujitsu Limited | Interface pour effectuer un contrôle de connection à la transition entre deux réseaux de communications |
WO2000062483A1 (fr) * | 1999-04-13 | 2000-10-19 | Nortel Networks, Inc. | Systeme permettant de suivre des donnees au sein d'un reseau a base de canaux |
WO2001065782A1 (fr) * | 2000-02-28 | 2001-09-07 | Telia Ab | Procede d'etablissement de trajets de transmission de donnees de bout en bout, au moyen du protocole de signalisation de reservation de ressources point par point, base protocole icmp |
US6775229B1 (en) | 2000-05-05 | 2004-08-10 | Fujitsu Network Communications, Inc. | Method and system for providing a protection path for connection-oriented signals in a telecommunications network |
US6693909B1 (en) | 2000-05-05 | 2004-02-17 | Fujitsu Network Communications, Inc. | Method and system for transporting traffic in a packet-switched network |
US6515966B1 (en) | 2000-05-05 | 2003-02-04 | Fujitsu Network Communications, Inc. | System and method for application object transport |
WO2001086863A1 (fr) * | 2000-05-05 | 2001-11-15 | Fujitsu Network Communications, Inc. | Reseau et procede de transport |
US7047176B2 (en) | 2000-05-05 | 2006-05-16 | Fujitsu Limited | Method and system for hardware simulation |
US7058730B2 (en) | 2000-05-05 | 2006-06-06 | Fujitsu Limited | Unique address space and method for a transport network |
US7075927B2 (en) | 2000-05-05 | 2006-07-11 | Fujitsu Limited | Method and system for quality of service (QoS) support in a packet-switched network |
US7133403B1 (en) | 2000-05-05 | 2006-11-07 | Fujitsu Limited | Transport network and method |
US7151773B1 (en) | 2000-05-05 | 2006-12-19 | Fujitsu Limited | System and method for connectionless/connection oriented signal transport |
US7173912B2 (en) | 2000-05-05 | 2007-02-06 | Fujitsu Limited | Method and system for modeling and advertising asymmetric topology of a node in a transport network |
US7385917B1 (en) | 2000-05-05 | 2008-06-10 | Fujitsu Limited | Method and system for providing a protection path for connectionless signals in a telecommunications network |
Also Published As
Publication number | Publication date |
---|---|
EP0849970A3 (fr) | 2002-06-12 |
EP0849970B1 (fr) | 2008-07-30 |
AU727424B2 (en) | 2000-12-14 |
JP2977029B2 (ja) | 1999-11-10 |
DE69738865D1 (de) | 2008-09-11 |
US5903559A (en) | 1999-05-11 |
CA2225321C (fr) | 2002-12-10 |
AU4851197A (en) | 1998-06-25 |
CA2225321A1 (fr) | 1998-06-20 |
US6343326B2 (en) | 2002-01-29 |
JPH10190701A (ja) | 1998-07-21 |
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